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Finding the Fourth Proportional to 125,115.55, 172,659.55 and 67,755.33

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Solution

The fourth proportional to 125,115.55, 172,659.55 and 67,755.33 is: 93,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,115.55 : 172,659.55 = 67,755.33 : x
  2. Step 2: Convert to fraction form
    125,115.55/172,659.55 = 67,755.33/x
  3. Step 3: Cross multiply
    125,115.55x = 172,659.55 × 67,755.33
  4. Step 4: Simplify right side
    125,115.55x = 11,698,604,787.90
  5. Step 5: Solve for x
    x = 11,698,604,787.90/125,115.55
  6. Step 6: Final answer
    x = 93,502.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.